Breaking in new car

RTFM (p.184). I'm surprised the dealer didn't go over this with you.

As with the whole octane discussion, there are varying opinions about the effectiveness of the procedure. But you ignore Honda's recommendations at your own risk.

The way I see it, it can't hurt to follow the procedure, but it may hurt not to follow it. Why take the risk? The only "cost" is you need to take it easy for the first little while. I know it's tough - the TSX is a fabulous car and fun to drive.

Welcome, sharp! But too bad you didn't come on here 250 miles ago.
Ah, you probably wouldn't have listened to us anyway.

I'm with kiteboy, but -- really, it all depends exactly what you mean by "aggressively." And, although I'm not sure about this, I think it's harder to do harm to an automatic than a manual -- unless you push it to an extreme, I think the car prevents most really bad stuff.

I think you're probably not too bad off. But really, kiteboy nailed it. That's the long and the short of it.

another 450 miles till break in period ends, try not to be "aggressive" with the car IMO.